October 8, 2026 · Applied Cybernetics Group
CVE-2015-3306 ProFTPD ProFTPD
ProFTPD Improper Access Control Vulnerability
- Added to KEV
2026-10-08- Federal due date
2026-10-11- Vendor
- ProFTPD
- Product
- ProFTPD
- EPSS
- 99.9th percentile (score 0.995, as of
2026-11-06) - NVD CVSS v3.1
- 10 (CRITICAL)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2015-3306
CISA short description
ProFTPD contains an improper access control vulnerability that could allow remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
NVD description
The mod_copy module in ProFTPD 1.3.5 allows remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.